The legend of the chupacabra publishes it because this one related to the unit 3 so called mysteries.
The Chupacabra or Chupacabras (pronunciation: /tʃupa'kabɾa/, from the Spanish words chupar, meaning "to suck", and cabra, meaning "goat"; literally "goat sucker"), also called El Chupacabras in Spanish, is a legendary cryptid rumored to inhabit parts of the Americas. It is associated more recently with sightings of an allegedly unknown animal in Puerto Rico (where these sightings were first reported), Mexico, and the United States, especially in the latter's Latin American communities.The name comes from the animal's reported habit of attacking and drinking the blood of livestock, especially goats. Physical descriptions of the creature vary. Eyewitness sightings have been claimed as early as 1990 in Puerto Rico, and have since been reported as far north as Maine, and as far south as Chile. It is supposedly a heavy creature, the size of a small bear, with a row of spines reaching from the neck to the base of the tail. Biologists and wildlife management officials view the Chupacabra as a contemporary legend.
In my opinion I believe that the chupacabra does not exist. The physical characteristics of the chupacabra and the animals found without blood are a mystery.